2001613601 has 8 divisors (see below), whose sum is σ = 2162100864. Its totient is φ = 1842057360.

The previous prime is 2001613597. The next prime is 2001613613. The reversal of 2001613601 is 1063161002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001613601 - 2² = 2001613597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001613651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228281 + ... + 236886.

It is an arithmetic number, because the mean of its divisors is an integer number (270262608).

Almost surely, 2^2001613601 is an apocalyptic number.

It is an amenable number.

2001613601 is a deficient number, since it is larger than the sum of its proper divisors (160487263).

2001613601 is a wasteful number, since it uses less digits than its factorization.

2001613601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465511.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2001613601 is about 44739.3965202929. The cubic root of 2001613601 is about 1260.2597937893.

Adding to 2001613601 its reverse (1063161002), we get a palindrome (3064774603).

The spelling of 2001613601 in words is "two billion, one million, six hundred thirteen thousand, six hundred one".